What is the life of an electric vehicle lithium battery? How many years can an electric vehicle lithium battery be used? I believe that most consumers have heard that the life of lithium batteries is "1000 times" and 1000 times of charge and discharge. More than this number of times, the battery will be "DIE", many friends in order to extend the life of the battery, every time Charging when the battery is completely exhausted, does this really extend the life of the battery? the answer is negative. The life of a lithium battery is "1000 times", which means not the number of times of charging, but a period of charging and discharging.

A charge cycle means that all of the battery's charge is from full to empty, and then from empty to full, which is not the same as charging. For example, a lithium battery used only half of the power on the first day, and then charged it slowly. If it is still the next day, it will be charged in half, and it will be charged twice in total. This can only be counted as one charging cycle, not two. Therefore, it is usually possible to complete a cycle after several charges. The battery capacity is reduced a little every time a charge cycle is completed.

However, this amount of electricity is very small, and high-quality lithium batteries will retain 80% of the original capacity after many cycles. Many lithium-powered products will still be used after two or three years. Of course, the life of the lithium battery of the electric vehicle still needs to be replaced after the end. The so-called 500 times means that the manufacturer has achieved 625 times of chargeable times at a constant depth of discharge, reaching 500 charge cycles. Due to the various effects of real life, especially the depth of discharge during charging is not constant, the "500.

LiFePO4 battery is a type of lithium ion battery. At present, LiFePO4 battery can be charged up to 2,000 times, and the cycle life can reach 7 to 8 years. It can be fully charged in 60 minutes of charging. It is unmatched by general lead-acid batteries, and the price is about 2 times that of the same capacity lead-acid battery. "charging cycle" can only be used as a reference lithium battery life.

The long-life lead-acid battery has a cycle life of about 300 times, and the highest is 500 times. The LiFePO4 battery has a cycle life of more than 2000 times, and the standard charge (5 hour rate) can be used up to 2000 times. The same quality lead-acid battery is ''new half year, old half year, maintenance and maintenance half a year'', up to 1~1.5 years, and LiFePO4 battery under the same conditions, the theoretical life will reach 7~8 years . Considering comprehensively, the performance price ratio is theoretically more than four times that of lead-acid batteries.